• Year
  • 1922 ??
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 72455
    • Brand: Synchrophase

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • Audio-Amplification; 3 AF stage(s)
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: RORO - Grebe, A.H. & Co.; Richmond
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

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